BMC Fourstroke R 01: suspension setup & specs
The BMC Fourstroke R 01 is a downcountry bike with 120 mm of fork travel and 120 mm at the rear. This page lists the 2 current builds with fork, shock and shock size and gives matching starting values for SAG and tyre pressure.
Calculate the setup for your BMC Fourstroke R 01 →
All builds
Fork, shock, shock size (eye-to-eye length × stroke) and rear travel, weight and price according to the manufacturer. Wheel size: 29.
| Build | Fork | Shock | Shock size | Rear travel | Weight | RRP | Calculator |
|---|---|---|---|---|---|---|---|
| One | Öhlins RXC34 Carbon (120 mm) | Öhlins TXC2 Air | 190x45 | 120 mm | 10.4 kg | – | Setup → |
| One | Öhlins RXC34 Carbon (120 mm) | Öhlins TXC2 Air | – | 120 mm | 11.0 kg | – | Setup → |
How it compares
At 120 mm, fork travel is 10 mm shorter than the median of the “downcountry bike” category (130 mm, 13 bikes). Travel is the same front and rear at 120 mm each. Among BMC’s mountain bikes, the BMC Fourstroke R 01 is the model with the most fork travel. The frame is made of carbon.
The lightest build, One, weighs 10.4 kg according to BMC – about 2.2 kg less than the category median (12.6 kg across 6 bikes with a stated weight). Within the range, weight varies by 0.6 kg. Fork and shock come from Öhlins on every build. Every build gets the same fork, a Öhlins RXC34 Carbon. Worth knowing for heavier riders: the maximum system weight is 110 kg – after about 11 kg of bike, that leaves around 99 kg including kit.
Setup notes for this spec
- Air shock (Öhlins TXC2 Air): measure SAG in your riding position, ideally with a helper holding the bike. Cycle the shock a few times after every pressure change.
Target SAG for the BMC Fourstroke R 01
SAG is the share of travel your weight already uses in the riding position. The table gives it straight in millimetres – read the O-ring on the stanchion and on the shock shaft and adjust the air pressure until it matches. Any figures from BMC take priority.
120 mm fork, 45.0 mm shock stroke (One)
| Riding style | Fork SAG | Shock SAG |
|---|---|---|
| XC / touring | 17 % = 20 mm | 24 % = 10.8 mm on the shock shaft |
| Trail | 20 % = 24 mm | 28 % = 12.6 mm on the shock shaft |
| Enduro / rough | 22 % = 26 mm | 30 % = 13.5 mm on the shock shaft |
| Bike park | 20 % = 24 mm | 27 % = 12.2 mm on the shock shaft |
120 mm fork (One)
| Riding style | Fork SAG |
|---|---|
| XC / touring | 17 % = 20 mm |
| Trail | 20 % = 24 mm |
| Enduro / rough | 22 % = 26 mm |
| Bike park | 20 % = 24 mm |
How to measure SAG is explained in our guide SAG setup.
Tyre pressure starting values
Basis: 2.40″ tyre width, tubeless, trail casing. If you run tubes, add about 0.2 bar (2.9 psi); with an insert, about 0.1 bar (1.5 psi) less is enough. Stock tyres: Pirelli Scorpion XC RC | 2.4"; Vittoria Mezcal | Tubeless | 2.35".
| Ready-to-ride weight | Front | Rear |
|---|---|---|
| 60 kg | 1.43 bar (21 psi) | 1.63 bar (24 psi) |
| 70 kg | 1.55 bar (22 psi) | 1.75 bar (25 psi) |
| 80 kg | 1.67 bar (24 psi) | 1.87 bar (27 psi) |
| 90 kg | 1.79 bar (26 psi) | 1.99 bar (29 psi) |
| 100 kg | 1.91 bar (28 psi) | 2.11 bar (31 psi) |
| 110 kg | 2.03 bar (29 psi) | 2.23 bar (32 psi) |
| 120 kg | 2.15 bar (31 psi) | 2.35 bar (34 psi) |
Air pressure in the fork and shock
The sticker on the fork (or on the shock) and the manufacturers’ setup charts give you a first pressure. Our calculator is more precise and suggests rebound too – always check the result via SAG.